SOLUTION: Solve the system by the substitution method. x-2y=-3 y=-4x+24

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Question 1181670: Solve the system by the substitution method.
x-2y=-3
y=-4x+24
Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
substitute the y=-4x+24 into the first equation
x-2(-4x+24)=-3
9x-48=-3
9x=45
x=5
therefore y=4